Syntheses and characterizations of di- and tri-organotin carboxylates of 4-oxo-4-phenyl butanoic and 4-(4-biphenyl)-4-oxobutyric acid

Abstract

A family of organotin carboxylates, [(C6H5)3Sn(L1)2] (1) and [(C6H11)2Sn(L2)] (2), was synthesized from reaction of R3SnOH and (where R = phenyl, R′ = cyclohexyl) with 4-oxo-4-phenyl butanoic (L1H) and 4-(4-biphenyl)-4-oxobutyric acid (L2H) in suitable mole ratios. They have been characterized by elemental analysis, FT-IR, 1H NMR spectroscopy, and single-crystal X-ray diffraction analysis. In 1, the geometry of tin is trigonal bipyramidal. Supramolecular architecture of 1 shows a polymeric chain structure with Ph3Sn centers linked by PhCOC2H4CO2 ligands via O → Sn interactions. Sn···Sn non-bonded distances in the repeating 1-D polymeric structure equal 5.835 Å. Complex 2 contains an angular sector and adopts a distorted tetrahedral geometry.